Getting weird error while using html in IOS

Question

While implementing a web-view into the page I coded like the following

 _testURLString = @"http://192.168.4.196/course/Course";
NSString *embedHTML = [NSString stringWithFormat:@"\
                       <html><head>\
                       <style type=\"text/css\">\
                       body {\
                       background-color: transparent;\
                       color: blue;\
                       }\
                       </style>\
                       </head><body style=\"margin:0\">\
                       <embed id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \
                       width=\"400\" height=\"700\"></embed>\
                       </body></html>"];
NSString *html = [NSString stringWithFormat:embedHTML, _testURLString, 400, 700];

UIWebView *videoView = [[UIWebView alloc] initWithFrame:frame];

videoView.backgroundColor = [UIColor clearColor];
[videoView loadHTMLString:html baseURL:nil];
[self.view addSubview:videoView];

The warning X-code through is more '%' conversions than data arguments warning at the

src=\"%@\"

I don't know what to do please help me.

Lucas Eduardo · Accepted Answer · 2013-08-29 13:37:05Z

1

You are using stringWithFormat: , and this method was supposed to replace src=\"%@\" for another string, but you are not passing none.

It should be something like this:

NSString *embedHTML = [NSString stringWithFormat:@"\
                   <html><head>\
                   <style type=\"text/css\">\
                   body {\
                   background-color: transparent;\
                   color: blue;\
                   }\
                   </style>\
                   </head><body style=\"margin:0\">\
                   <embed id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \
                   width=\"400\" height=\"700\"></embed>\
                   </body></html>", _testURLString]; //or something else

answered Aug 29, 2013 at 13:37

Lucas Eduardo

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Comments

Dharmbir Singh · Accepted Answer · 2013-08-29 13:36:20Z

You need to pass src (src=\"%@\") value in this string. For more info see in last line

 NSString *embedHTML = [NSString stringWithFormat:@"\
                           <html><head>\
                           <style type=\"text/css\">\
                           body {\
                           background-color: transparent;\
                           color: blue;\
                           }\
                           </style>\
                           </head><body style=\"margin:0\">\
                           <embed id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \
                           width=\"400\" height=\"700\"></embed>\
                           </body></html>",_testURLString];     // Edited

Mick MacCallum · Accepted Answer · 2013-08-29 13:46:10Z

You can eliminate the second formatted string entirely seeing as it didn't actually do anything of value. Additionally, you never added format specifiers for the URL and the width/height of the video in the initial formatted string. Here's an example:

NSString *embedHTML = [NSString stringWithFormat:@"\
                       <html><head>\
                       <style type=\"text/css\">\
                       body {\
                       background-color: transparent;\
                       color: blue;\
                       }\
                       </style>\
                       </head><body style=\"margin:0\">\
                       <embed id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \
                       width=\"%i\" height=\"%i\"></embed>\
                       </body></html>",_testURLString,400,700];

CodenameLambda1 · Accepted Answer · 2013-08-29 13:51:23Z

0

Edit width=\"400\" height=\"700\" to width=\"%d\" height=\"%d\" since you're passing the arguments later in the build up of your HTML String.

Also, as 0x7fffffff said, if you're just making a simple string then write your embedHTML as @"your_string" instead of [NSString stringWithString:@"your_string"]; XCode nowadays warns for this redundancy.

edited Aug 29, 2013 at 13:51

answered Aug 29, 2013 at 13:34

CodenameLambda1

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1 Comment

CodenameLambda1 Over a year ago

can you type in the exact warning ?

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